Why are there THREE power inputs when there are only two things to be powered: the gumstix and the servos?
On the robostix board, V_BATT isn’t an input. The 3 inputs are: • V_POWER (same type of power connector that’s on all of the other boards). This allows the gumstix/robostix to be plugged into the wall wart. • V_ROBOBATT – really the same as V_POWER, but it’s a 2 pin 0.1″ header, rather than a jack like the one on the wall wart. You would only ever use one of V_POWER or V_ROBOBATT at the same time. • V_MOTOR – goes to the servos. There is a jumper which allows V_MOTOR/V_ROBOBATT to be connected together which results in the motors and the ATMega being powered from the same battery (connected to either battery connector or the wall-wart plug).
